Zerova DB Series - Screw Torque Specifications

25
3.5.2 Screw torque requirement table
Screw in Metric
Screw
size
Screw
type
Stell
Inch-Lbs
Steel
Kgf-Cm
Steel
N-m
Aluminum
Kgf-Cm
Aluminum
N-m
M2*0.4
Machine
3~4.77
3.5~5.5
0.34~0.54
3~4.5
0.34~0.44
M2.5*0.45
Machine
3~4.77
3.5~5.5
0.34~0.54
3~4.5
0.34~0.44
M3*0.5
Machine
5.5~9
6.5~10.5
0.64~1.04
5.2~8.4
0.51~0.82
M3.5*0.6
Machine
8.5~13
10~15
0.98~1.47
8~12
0.78~1.18
M4*0.7
Machine
13~18
15~21
1.47~2.06
12~17
1.18~1.66
M5*0.8
Machine
25~34
29~39
2.84~3.82
23~32
2.26~3.14
M6*1.0
Machine
45·55
52~63.5
5.1~6.22
42~51
4.11~5
M6*1.0
Hex cap
85~112
98~129
9.6~12.65
78~103
7.65~10.1
M8*1.25
Machine
106~141
122~163
11.96~15.98
98~130
9.61~12.75
M8*1.25
Hex cap
205~274
237~316
23.24~30.98
190~253
18.63~24.8
M10*1.5
Hex cap
212~382
245~440
24.02~43.15
196~351
19.22~34.42
M12*1.75
Hex cap
372~668
430~770
42.17~75.49
343~615
33.63~60.3
Screw in Imperial
2-56
Machine
1.5~2
1.7~2.3
0.17~0.22
1.4~1.8
0.14~0.18
4-40
Machine
3~4
3.5~4.5
0.34~0.44
2.8~3.6
0.27~0.35
6-32
Machine
6~10
7~11.5
0.68~1.13
5.6~9.2
0.55~0.9
8-32
Machine
10~15
11.5~17
1.13~1.66
9.2~14
0.9~1.37
10- 32
Machine
16~24
18.5~28
1.81~2.74
15~22
1.47~2.16
1/4-20
Machine
35~46
40~53
3.92~5.2
32~42
3.14~4.11
1/4-20
Hex cap
57~77
66~89
6.47~8.73
53~71
5.2~6.96
5/16-18
Hex cap
119~158
137~182
13.43~17.85
110~145
10.77~14.21
3/8-16
Hex cap
205~274
237~316
23.24~30.99
190~253
18.63~24.82
7/16-14
Hex cap
338~451
390~521
38.24~51.09
312~416
30.59~40.79
1/2-13
Hex cap
515~686
595~792
58.35~77.66
476~634
46.68~62.17